Trimming device for paper-folding machines



(No Model.) 2 Sheets$heet 1. J. H. STONEMETZ.

I TRIMMING DEVIGB FOR PAPER FOLDING MACHINES. No. 320,891. Patented June. 23, 1.885.

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J. H. STONEMETZ. TRIMMING DEVICE FOR PAPER FOLDING MACHINES.

No. 320,891. Patented June 23, 1885..

I Walla/Ilium [Elli/ NITED STATES PATENT QLFFIQEO JOHN H. STONEMETZ, OF ERIE, PENNSYLVANIA.

TRIMMING DEVICE FOR PAPER- FOLDING MACHINES.

SPECIFICATION forming part of Letters Patent No. 320,891, dated June 23, 1885.

Application filed January 28, 1884.

To all whom it may concern- Be it known that I, J OHN H. S'roNEMETz, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improvements in Trimming Devices for Paper- Folding Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon,which form a part of this specification.

The present invention relates to cutting or trimming devices for paper-folding machines for trimming the edges of the sheets of paper as they pass through the rollers; and the ob ject of the invention is to provide means whereby the cutting device can be readily thrown out of or into operation, according as it is desired to run the machine with or without the trimming device; and my invention consists of a trimming device adapted to be thrown in and out of gear, substantially as hereinafter described and claimed.

In a prior patent I have shown and de scribed a trimming device for a paper-folding machine adapted to trim sheets of different sizes, and to present different cutting-edges, which can be successively brought into use as they become worn, and for convenience of illustration I herein show the present invention in connection with the same trimming device, though the latter does not constitute any part of the present invention.

Figure 1 of the drawings is a vertical transverse section of a paper folding machine, showing the circular paper trimming-knife 13 carried by the independent shaft 0 beneath one of the second pair of rollers D. The gearwheel E of the knife-shaft is shown as meshed in with the gear-wheel F on the roller in position for use. The frame, the rollers, and the rest of the machine may be of any approved construction. Fig. 2 is a view of the righthand portion of Fig. 1, showing the papertrimming device thrown out of action. Fig. 3 is an enlarged cross-section on the line or of (No model.)

Fig. 1. Fig. 4 is an enlarged perspective view of the pivoted frame for the trimming-knife shaft, and Fig. 5illustrates a modification of the same invention.

The frame A, which is provided with bearings for the knife-shaft O, is pivoted at one end, at G, to the frame M of the folding-machine. Near the other end there is a bindingscrew, H, which passes through a slot, m, in the cross-beam M of the frame, and is provided with a head, h, that bears on the back side of the cross-beam, and by means of which the frame A can be clamped in its proper position when the trimming device is to be used. The slot is made of an arc of a circle about the pivot G as a center,'so that when the binding-screw is loose the frame A can be swung up or down to throw the gear E into or out of mesh with the gear F, as desired.

In Fig. 4 the clampingbolt H is shown detached from the frame A, and the latter dropped down to expose the slot m. The slot may be made'in the frame A, and the bolt Hscrewed into the frame M,instead of being constructed in the reverse manner, as shown.

In the modification illustrated by Fig. 5, which shows a cross section through the frame M and an end View of the frame A, the latter is hung in bearings K-one at each endand by means of the screw-pin L, which projects through the frame M and bears against the frame A below the line of the bearings K, it can be tilted up in front or down. The knife-trimming shaft being jour naled at c, it will be readily seen that it can be raised and thrown into gear for use by 85, screwing the pin L forward, and that it can be lowered and thrown out of gear by screwing the pin L back.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a paper-folding machine, the combination of a bracket pivoted at one end to the framing of the machine, a shaft mounted in said bracket and carrying a revolving cutter and a gear-wheel, and a gear-wheel mounted 95 on a rotating roller-shaft in the machine for transmitting a positive rotary motion to the first geanwheel and to the cutter when the said bracket is turned on its pivot, so as to In testimony whereof I aflix my signature in bring the cogs of the two wheels into gear, presence of two Witnesses. substantially as shown and described.

2. In a paper-folding machine, the combi- JOHN H. STONEMEIZ. 5 nation, with a roller having gear F, of shaft 0, having gear E and cutter B, )ivoted frame WVit'nesses: A and clamping-screw H, substantially as de- F. W, GRANT, scribed, and for the purpose set forth. D. L. CRAWFORD. 

